Pin AssignmentsD-53160-A2-GB21-80 March 1999AUX Port InterfaceThe Auxiliary (AUX) port connects to the LAN Adapter for SNMP or Telnetapplications, or to another DSU/CSU’s COM port for daisy chain connectivity.(The SNMP LAN Adapter includes the cable that is needed to attach it to theDSU/CSU.) The AUX port connector is an 8-position unkeyed modular connectorfor the Model 3160 DSU/CSU (Table D-4) and a DB25-type socket connector forModel 3164 and 3165 DSU/CSUs (Table D-5).NOTE:For daisy-chaining an AUX port to a COM port, an 8-pin-to-8-pin cable(Model 3160) or 25-pin-to-8-pin cable (Model 3164 or 3165) is required. Theconfiguration options Com Use and Aux Use must be set to Daisy. Wheneverthe cable is connected or disconnected, change the Com Use and Aux Useconfiguration options to the correct values.Table D-4. AUX Port Connector for Model 3160 DSU/CSUsSignal Direction Pin NumberDTE Transmit Clock From DSU/CSU 1DTE Receive Data To DSU/CSU 2Signal Ground — 3DTE Transmit Data From DSU/CSU 4DTE Receive Clock From DSU/CSU 8Table D-5. AUX Port Connector for Model 3164 and 3165 DSU/CSUsSignal Direction Pin NumberDTE Transmit Clock From DSU/CSU 15DTE Receive Data To DSU/CSU 3Signal Ground — 7DTE Transmit Data From DSU/CSU 2DTE Receive Clock From DSU/CSU 17
